Brett D. Crist, MD and Gregory J. Della Rocca, MD, PhD Department of Orthopaedic Surgery, University of Missouri, Columbia, MO, USA Several factors have been evaluated to look at risk of infection after open fractures. Of the factors listed, early antibiotic administration is the most appropriate answer. Antibiotic administration within 3 hours of injury significantly reduced the rate of infection in a series of 1104 open fractures compared to patients receiving antibiotics greater than 3 hours from injury or no antibiotics at all. Patients should receive intravenous antibiotics within 3 hours from injury and within 1 hour from hospital admission. Timing of surgical debridement as long as it is within 24 hours from injury has not been associated with a significant difference in infection rates of open fractures. Answer: D Pollak AN, Jones AL, Castillo RC, et al. The relationship between time to surgical debridement and incidence of infection after open high‐energy lower extremity trauma. J Bone Joint Surg Am (2010); 92(1):7–15. Based on the best available data, most open fractures should receive intravenous antibiotics for 24 hours after each operative debridement and then 24 hours after definitive soft tissue management (closure for this patient). Exceptions could be those with significant gross contamination like a type IIIB tibia fracture where 72 hours may be indicated. Answer: D Halawi MJ, Morwood MP. Acute management of open fractures: an evidence‐based review. Orthopedics (2015); 38(11):e1025–e1033. Hoff WS, Bonadies JA, Cachecho R, Dorlac WC. East Practice Management Guidelines Work Group: update to practice management guidelines for prophylactic antibiotic use in open fractures. J Trauma. 2011; 70(3):751–754. Compartment syndrome can have devastating complications that can be avoided with early diagnosis and fasciotomy. Bhattacharyya et al. reviewed medical malpractice claims and identified these risk factors associated with unsuccessful defense and increased liability: Answer: D Bhattacharyya T, Vrahas MS The medical‐legal aspects of compartment syndrome. J Bone Joint Surg Am. 2004; 86‐A(4):864–868. The most common causes of bleeding associated with pelvic fractures are injury to the posterior venous plexus and cancellous fracture surfaces (85–90%). Approximately 10–15% of bleeding is associated with injures to branches of the internal iliac system (superior gluteal or pudendal arteries). Although decreasing the pelvic volume is an important first step, patients that are in the operating room and continue to be hemodynamically unstable after all other known sources of bleeding are addressed should undergo retroperitoneal packing to address the venous and bony bleeding that occurs. Hemodynamically unstable patients should not be transferred to the CT scanner. The patient has already received adequate fluid resuscitation; another source of bleeding must be identified and addressed. Since the patient is already in the operating room and the most likely cause of pelvic bleeding is venous or fracture surfaces, pre‐ or retroperitoneal packing should be performed prior to going to angiography. If the patient remains hypotensive after retroperitoneal packing and external fixation, then angiography should be performed to address the probable arterial injury. Following this protocol, only 16.7% of hemodynamically unstable patients required subsequent embolization, and there were no mortalities. Answer: E Langford JR, Burgess AR, Liporace FA, Haidukewych GJ. Pelvic fractures: part 1. Evaluation, classification, and resuscitation. J Am Acad Orthop Surg. 2013; 21(8):448–457. Cothren CC, Osborn PM, Moore EE, Morgan SJ, Johnson JL, Smith WR. Preperitonal pelvic packing for hemodynamically unstable pelvic fractures: a paradigm shift. J Trauma. 2007; 62(4):834–839; discussion 839‐842. Although patients that sustain pelvic ring injuries complain of pelvic and low back pain, women are at significant risk for dyspareunia—pain/discomfort with sexual intercourse. Dyspareunia may occur in up to 91% of women and most likely occurs with anteroposterior compression (APC) type fractures. Furthermore, women also have a high incidence of genitourinary complaints (49%). It is critical to ask patients about these complaints during follow‐up, so they may be addressed. Of note, a woman with a pelvic fracture is more than twice as likely to give birth by cesarean section. The rate of low back pain, posterior pelvic pain, and leg length discrepancy is not different from men. Answer: E Vallier HA, Cureton BA, Schubeck D. Pelvic ring injury is associated with sexual dysfunction in women. J Orthop Trauma. 2012; 26(5):308–313. Cannada LK, Barr J. Pelvic fractures in women of childbearing age. Clin Orthop Relat Res. 2010; 468(7):1781–1789. The “6‐hour” rule for debridement of open fractures originated from an 1898 presentation by Paul Leopold Frederich where he contaminated guinea pigs with garden mold and stair dust to illustrate the importance of surgical debridement. In this antiquated animal study, debridement of the contaminated wound was less likely to be effective after 6–8 hours. Several studies have shown no association between timing of debridement and infection when debridement occurs within 24 hours. Others have shown a difference between debridement within 6 hours and less than 24 hours. However, all of these studies either have flawed study designs or too small a sample size to gain statistical significance. Therefore, emergent debridement is not necessarily supported, but neither is elective debridement. Current practice is based upon the current best evidence and includes debridement of open fractures urgently when the life‐threatening emergencies have been addressed, patient’s medical condition is stabilized and when the appropriate surgical resources are available. Answer: D Werner CM, Pierpont Y, Pollak AN The urgency of surgical debridement in the management of open fractures. J Am Acad Orthop Surg. 2008; 16(7):369–375. Halawi MJ, Morwood MP. Acute management of open fractures: an evidence‐based review. Orthopedics. 2015; 38(11):e1025–e1033. A visibly documented transected tibial nerve is the only answer that should have a patient consider an amputation. Inability to actively dorsiflex the ankle could be related to the fracture and associate pain, or a peroneal nerve palsy. As long as there is an identifiable posterior tibialis pulse, the absence of a dorsalis pedis pulse does not indicate an amputation; 5.5 cm of tibial bone loss can be reconstructed with a variety of bone‐grafting techniques. The lack of plantar foot sensation alone no longer indicates amputation. The Lower Extremity Assessment Project (LEAP) was a multicenter prospective outcome study that involved 601 patients with severe, limb‐threatening lower extremity patients that compared limb salvage versus amputation; 67% of patients in the limb salvage group with lack of plantar sensation upon admission had complete return of plantar sensation within 24‐months. There were no significant outcomes differences found between the insensate salvage, insensate amputation, and the sensate control groups. The presence or absence of plantar sensation should not be used to direct treatment. Answer: D Bosse MJ, McCarthy ML, Jones AL, et al
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Orthopedic and Hand Trauma
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